Massage roller



FIG. 1 is a perspective view of a massage roller, showing my new design;

FIG. 2 is a front elevation view thereof; the rear side elevation view being the same;

FIG. 3 is a left side elevation view thereof; the right side elevation view being the same;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a rear, bottom, and right side perspective view thereof. 

CLAIM The ornamental design for a massage roller, as shown and described. 